JP2707941B2 - Elevator compensation rope tensioner equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compensating rope tensioning device for an elevator suspended at both ends thereof, which are respectively connected to a car and a counterweight.

[0002]

2. Description of the Related Art FIG. 7 and FIG.
FIG. 3 is a view showing a conventional elevator compensating rope tensioning device shown in Japanese Patent Publication No. 03156, FIG. 7 is a conceptual vertical sectional view of the elevator device, and FIG. 8 is an enlarged view of a tensioning portion of FIG. In the figure, (1) is a hoistway of an elevator, (2) is a hoist provided on the hoistway (1), (3) is wound around the hoist (2) and a car ( 4) to the other end (5)
The main rope (6) is suspended at both ends by being connected to the car (4) and the counterweight (5), respectively, to form an intermediate curved portion (7), and the curved portion (7 ) Is a compensating rope arranged at the lower part of the hoistway (1), (8) is a lower part of the hoistway (1), that is, a beam provided horizontally on the bottom surface, and (9) is a standing beam from the beam (8). These are guide rails that are spaced apart and parallel to each other.

A frame (10) is movably engaged with a guide rail (9) by a guide (11) provided on the outer surface, and (12) is a frame.
(10) provided in the frame (10) and supported by the compensating rope
(6) a tension pulley placed in a state of straddling the curved portion (7), (13) is provided by pressing the guide rail (9), and the upper surface contacts the lower surface of the upper guide (11). (14) is a spring that clamps the stopper (13) on the guide rail (9), and (15) is a guide rail (9) that has its upper end pivotally attached to the stopper (13) and hangs down. Bars (16) are pivoted to the lower end of the bar (15), and (17) is a holding bracket protruding from the outer surface of the frame (10). A contact surface (18) is provided which is a slope facing the opposite side of the guide rail (9) and having an upper end inclined in a direction away from the guide rail (9).

[0004] (19) is a stopper (13), a spring (14), and a bar (1).
5), a lock device composed of rollers (16) and a grip (17), (20) is a cam protruding from a stopper (13) of a lock device (19), and (21) is a frame (10). The operating part is provided in the cam
The elevator stop switch, which is disposed at a distance A shown in FIG. 8 below the position (20), comes into contact with the cam (20) when the frame (10) rises by a distance A or more from the state shown in FIG.

The conventional elevator compensating rope tensioning device is constructed as described above, and includes a car (4) and a counterweight.
When one of (5) is descending and sudden braking is applied,
The other tries to jump by inertia. At this time, a jumping action also occurs on the tension pulley (12) via the compensation rope (6). However, when the tensioner (12) rises slightly, the guide rail (9) (1)
6), the gap between the roller (16) and the contact surface (18) immediately becomes zero.

As a result, the guide rail (9), the rollers (16) and the contact surface (18) engage with each other to prevent the tension pulley (12) from further ascending, so that the car (4) and the counterweight are prevented. (5) The other jump is suppressed. The jump of the car (4) and the like is particularly increased in a high-lift elevator.

[0007] The distance that the tensioner (12) moves from when it starts to rise to when it stops is within a range where the locking device (19) does not operate when the elevator (12) moves upward due to inertia when starting and stopping. By minimizing the gap between the roller (16) and the contact surface (18), it is possible to minimize the jump of the car (4) or the counterweight (5).

Here, the main rope (3) and the compensating rope (6) extend while being used for a long time, and the tension pulley (12) descends, but the clearance between the roller (16) and the contact surface (18) is increased. Is configured not to be wide. That is, the contact surface between the stopper (13) and the guide rail (9) does not fall off due to the weight of the locking device (19), and the weight of the tensioning wheel (12) is reduced by the weight of the locking device (19). The spring (15) is compressed so as to generate a frictional force such that it slides down when added. As a result, when the main rope (3) and the compensating rope (6) are extended, the weight of the tensioner (12) is added to the stopper (13), and the tensioner (12) and the locking device (19) come together. Then, the locking device (19) moves downward and stops by an amount corresponding to the extension of the main rope (3) and the compensation rope (6). Therefore,
The mutual position of the roller (16) of the lock device (19) and the holding bracket (17) projecting from the frame (10) of the tensioner (12) is always kept constant.

[0009]

In the conventional elevator compensating rope tensioning device as described above, the tensioning rope (12) descends and follows the elongation of the main rope (3) and the compensating rope (6). . However, due to changes in environmental conditions such as changes in temperature,
Locking device (19) when (3) and compensating rope (6) shrink
Is fixed, so that it does not follow the rise of the tensioner (12). Therefore, when the main rope (3) and the compensation rope (6) shrink over time, the elevator stop switch (2
1) operates and the elevator stops abnormally. For this reason,
There was a problem that safe and accurate elevator operation was hindered, for example, passengers were trapped in the car (4).

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a tensioner follows a temporal extension and contraction of a main rope and a compensating rope, and is displaced. It is an object of the present invention to obtain a compensating rope upholstery device for an elevator that can prevent the upholstery from jumping up when an abnormality occurs.

[0011]

According to a first aspect of the present invention, there is provided an elevator compensating rope tensioning apparatus according to the first aspect of the present invention, wherein both ends are respectively connected to a car and a counterweight of an elevator and suspended on a hoistway of the elevator. A compensating rope which is lowered and forms a curved portion disposed at the lower part of the hoistway in the lower portion of the hoistway, a tension pulley provided in a state of straddling the curved portion of the compensating rope, and And a damper device provided with a piston mounted on the frame and displaced in the horizontal direction, the pistons being arranged to face each other, and a piston of the damper device standing upright from the lower portion of the hoistway. And a guide rail having a slope inclined in a direction to retreat the corresponding piston from the lower part to the upper part and movably engaged with the piston respectively in the vertical direction. Eclipsed.

[0012] Further, in the elevator compensating rope tensioning device according to the second aspect of the present invention, both ends are respectively connected to a car and a counterweight of the elevator, and suspended at the elevator hoistway to the intermediate portion. A compensating rope forming a curved portion arranged at the bottom of the hoistway,
A tension sheave provided on the curved portion of the compensating rope, a frame body disposed on the curved portion and pivotally supporting the tension wire, and projecting ends protruding from the mutually facing side surfaces of the frame body. A damper device provided with a piston which is displaced in the horizontal direction, and a lower portion of the hoistway, which is erected in correspondence with each of the damper devices and vertically movably engages with a protruding end of the piston of the damper device, and And a guide rail having a slope inclined in a direction to retreat the corresponding piston from the upper part to the upper part.

Further, in the elevator compensating rope tensioning apparatus according to the third aspect of the present invention, both ends are respectively connected to a car and a counterweight of the elevator, and are suspended from the hoistway of the elevator to the intermediate portion. A compensating rope forming a curved portion arranged at the bottom of the hoistway,
A tension pulley provided in a state of being straddled over the curved portion of the compensation rope, a frame disposed on the curved portion and pivotally supporting the tension pulley, and a piston mounted on the frame and displaced in the horizontal direction are provided. A damper device, a transmission mechanism provided on the frame body for transmitting the operation of the piston of the damper device to a remote position along the surface of the frame body, and a transmission mechanism vertically provided at the tip end of the transmission mechanism which is erected from the lower portion of the hoistway. A guide rail which is movably engaged and has a slope inclined from a lower portion to an upper portion in a direction for operating the piston via a transmission mechanism.

According to a fourth aspect of the present invention, there is provided an elevator compensating rope tensioning device, wherein both ends are respectively connected to a car and a counterweight of the elevator, and the intermediate portion is suspended from a hoistway of the elevator. A compensating rope forming a curved portion arranged at the bottom of the hoistway,
A tension pulley provided in a state of being straddled over the curved portion of the compensation rope, a frame disposed on the curved portion and pivotally supporting the tension pulley, and a piston mounted on the frame and displaced in the horizontal direction are provided. The damper device is vertically erected from the lower part of the hoistway, restricts the horizontal displacement of the tip of the piston of the damper device within a predetermined range, and the tip of the piston is movably engaged in the vertical direction to form the frame body. A guide rail that guides and has a slope formed to be inclined in a direction to retract the piston from the lower part to the upper part is provided.

Further, in the elevator compensating rope tensioning device according to the fifth aspect of the present invention, both ends are respectively connected to a car and a counterweight of the elevator, and suspended at the elevator hoistway to the intermediate portion. A compensating rope forming a curved portion arranged at the bottom of the hoistway,
A tension pulley provided in a state of being straddled over the curved portion of the compensation rope, a frame disposed on the curved portion and pivotally supporting the tension pulley, and a piston mounted on the frame and displaced in the horizontal direction are provided. A damper device, a detector that detects a pressure fluctuation of the liquid sealed in the damper device and outputs an output when an abnormality occurs in the elevator, and a detector that is erected from the lower part of the hoistway and is provided at the tip of the piston of the damper device. Engage movably in the vertical direction,
A guide rail formed with a slope inclined in a direction of retreating the piston from a lower portion to an upper portion.

[0016]

According to the first aspect of the present invention configured as described above, the expansion and contraction of the main rope and the compensating rope are controlled by
The frame and the tension wheel follow and displace. Also, in the event of an abnormality such as a sudden stop of the car or the like, the jumping of the sheave is restrained by the action of the damper device engaged with the guide rail against the jumping of the sheave.

According to the second aspect of the present invention, the frame and the pulley follow the expansion and contraction of the main rope and the compensating rope. Also,
In the event of an abnormal situation such as a sudden stop of the car or the like, the jumping up of the tensioning sheave is restrained by the action of the damper devices engaged with the guide rails respectively arranged on both sides of the frame body.

According to the third aspect of the present invention, the frame and the pulley follow the expansion and contraction of the main rope and the compensating rope. Also,
In the event of an abnormality such as a sudden stop of a car or the like, the jumping up of the tensioning sheave is restrained by the action of the damper device engaged with the guide rail via the transmission mechanism in the event that the tensioning sheave jumps up.

According to the fourth aspect of the present invention constructed as described above, when the main rope and the compensating rope are expanded and contracted, the frame and the damper device are guided and displaced by the guide rail. As a result, the tension pulley is displaced following the expansion and contraction of the compensation rope and the like. Further, in the event of an abnormality such as an abrupt stop of a car or the like, the jumping up of the stub is restrained by the action of the damper device against the jumping up of the stub.

According to the fifth aspect of the present invention, the frame and the pulley follow the expansion and contraction of the main rope and the compensating rope. Also,
In the event of an abnormal stop such as a sudden stop of a car, etc., the jumping of the sheave is restrained by the action of the damper device against the jumping of the sheave. Further, when the tension pulley jumps up when an abnormality such as a sudden stop of a car or the like occurs, the pressure in the cylinder of the damper device rapidly rises and the detector operates.

[0021]

【Example】

Embodiment 1 FIG. 1 to 3 are views showing an embodiment of the present invention. FIG. 1 is a view corresponding to an enlarged view of the above-described overhaul portion in FIG. 8, FIG. 2 is an enlarged plan view of FIG. 1, and FIG. FIG. 2 is an enlarged view showing a part of the damper device of FIG. In the figure,
(1) is a hoistway of an elevator, (6) is not shown, but both ends are respectively connected to a car and a counterweight and suspended, and a curved portion ( The compensating rope forming (7), (8) is the lower part of the hoistway (1), that is, the mounting base provided on the bottom surface, (9) is erected from the mounting base (8) and is arranged in parallel away from each other. The guide rail has a vertically extending groove (22) formed at an end face in the width direction, the width direction of which is arranged parallel to a side surface of a frame body to be described later, the upper part of which is wider than the lower part.

A frame (10) is movably engaged with a guide rail (9) via a longitudinal groove (22) by a damper device provided on the outer surface, which will be described later, and (12) is a frame (10). The frame (1
The tension pulley (23), which is pivotally mounted on the curved portion (7) of the compensating rope (6) and is disposed horizontally on the side surface of the frame (10) and is supported by the guide rail (9). ) Are fixed bases that are arranged to face each other.

Numeral (24) is a damper device mounted on each of the fixed bases (23), and is a cylinder (25) arranged horizontally,
Piston (26) provided on cylinder (25), piston (2
Roller (27), which is pivoted by the protrusion of (6) and rolls in the longitudinal groove (22) of the guide rail (9), and a compression coil spring that urges the piston (26) in the direction of the guide rail (9). The elastic body (28), the protrusion (29) formed at the longitudinal middle part of the piston (26) to reduce the gap with the cylinder (25), and the incompressibility of oil etc. sealed in the cylinder (25) It is constituted by a detector (31) provided on the liquid (30) and the cylinder (25) to detect a pressure fluctuation of the liquid (30).

In the elevator compensating rope tensioner device constructed as described above, the frame (10) pivotally supporting the tensioner (12) is provided on the side surface and mutually connected via the guide rail (9). Roller (27) of damper device (24) arranged opposite
As a result, the guide rail (9) is engaged with the longitudinal groove (22) and guided vertically. Therefore, the frame body (10) smoothly moves up and down with respect to the elongation of the compensating rope (6) or the like over time or due to a change in climate or the like.

However, the pulling pulley (12) generated at the time of an emergency stop when the elevator car or the like descends, that is, the frame (1)
The jump phenomenon of 0) is restricted as described below. That is, the gap between the piston (26) and the cylinder (25), the liquid
By appropriately selecting (30), the damper device (24)
A wedge-shaped guide rail (9) whose upper part is wider than the lower part, that is, the piston of the damper device (24) corresponding from the lower part to the upper part
The lifting of the frame body (10) is braked by being pressed by the slope inclined in the direction to retreat (26).

In short, the damper device (24) hardly generates a restraining force against the gradual expansion and contraction of the compensating rope (6) and the like over time and changes in the surrounding environment, and the frame (10) moves up and down smoothly. Moving. In addition, a sudden jumping-up phenomenon of the frame body (10) that occurs at the time of an emergency stop of an elevator car or the like is restrained by the operation of the damper device (24). Therefore, the stretcher (12) moves up and down to follow the extension of the compensation rope (6), etc., and the elevator stops abnormally and passengers are trapped in the car, preventing safe and accurate elevator operation. Can be prevented beforehand.

Further, the sudden jumping-up phenomenon of the frame (10) which occurs at the time of an emergency stop of an elevator car or the like is restricted by the action of the damper device (24), and is caused by the jumping-up of the frame (10). Can be prevented beforehand.

In addition, in the event that the frame (10) suddenly jumps up at the time of an emergency stop of an elevator car or the like, the pressure in the cylinder (25) rapidly increases. It can be detected by the device (31) and input to the elevator control device (not shown) to perform safety control such as shutting off the power of the elevator and stopping the nearest floor of the car, thus improving the safety of the elevator can do.

The roller (27) of the damper device (24) is engaged with the longitudinal groove (22) of the guide rail (9), and the frame (10) is guided in the vertical direction. For this reason, a guide device only for guiding the frame body (10) is not required, so that the device configuration can be simplified and the manufacturing cost can be reduced.

Embodiment 2 FIG. 4 and 5 are views showing another embodiment of the present invention. FIG. 4 is a view corresponding to an enlarged view of the above-described pulley portion in FIG. 1, and FIG. 5 is an enlarged plan view of FIG.
In the figure, (1) is a hoistway of an elevator, and (6) is not shown, but both ends are respectively connected to a car and a counterweight and suspended, and are disposed in the middle below the hoistway (1). (8) is the lower part of the hoistway (1), that is, the mounting base provided on the bottom surface, and (9) is the mounting base.
(8) Guide rails that are erected from the (8), spaced apart and parallel to each other, and are provided opposite to the side surfaces of the frame described later, with the upper part closer to the side facing the frame than the lower part on the surface facing the frame. A slope inclined in the direction in which it runs is formed in this slope
Is provided.

(10) is movably engaged with the guide rail (9) via the longitudinal groove (22) by a damper device described later, which is disposed on the side surface and stands upright toward the guide rail (9). Frame,
(12) is a tensioner provided in the frame (10), the shaft is pivotally supported on the side surface of the frame (10), and is disposed in a state of being laid over the curved portion (7) of the compensation rope (6), (24) is a horizontally arranged damper device standing upright on both sides of the frame body (10), a horizontally arranged cylinder (25), a piston (26) provided on the cylinder (25). , A roller (27) pivoted on the protrusion of the piston (26) and rolling in the longitudinal groove (22) of the guide rail (9), the piston (2
An elastic body (28) composed of a compression coil spring that urges the piston (6) in the direction of the guide rail (9), and a protrusion (29) formed at the longitudinal middle portion of the piston (26) to reduce the gap with the cylinder (25) ) And incompressible liquid (30) such as oil enclosed in cylinder (25)
It consists of.

In the embodiment of FIG. 4 and FIG.
A frame (10) pivotally supporting (12) is provided on a roller (2) of a damper device (24) which is provided on a side surface and is arranged to face a guide rail (9).
The guide rail (9) engages with the vertical groove (22) of the guide rail (9) and is guided vertically. In addition, the tension pulley (12), which is generated during an emergency stop when the elevator car or the like descends, that is, the frame
The jump phenomenon of (10) is restricted as described below.
In other words, the upper part of the guide rail (9) is larger than the lower part of the frame (10).
A vertical groove (22) is formed on a slope inclined in a direction approaching the side surface. Then, by raising the frame (10) and retreating the piston (26) of the damper device (24) corresponding to the longitudinal groove (22), the jump of the frame (10) is braked.

Accordingly, although detailed description is omitted, FIG.
It is clear that the embodiment of FIG. 5 can obtain the same operation as the embodiment of FIGS. 4 and 5, the number of the damper devices (24) can be reduced as compared with the embodiment of FIGS. 1 to 3, the device configuration can be simplified, and the manufacturing cost can be reduced.

Embodiment 3 FIG. FIG. 6 is also a view showing another embodiment of the present invention, and FIG. 6 is a view corresponding to the enlarged plan view of the overhanging portion of FIG. 5 described above. In the drawings, the same reference numerals as those in FIGS. 4 and 5 denote corresponding parts, and (32) is erected on the side surface of the frame (10) and is arranged near the damper device (24) in parallel with the damper device (24). The support, (33), has an intermediate part pivotally supported by the support (32), one end of which is pivotally attached to the tip of the protruding portion of the piston (26) of the damper device (24), and the other end of which has the holder (34). The pivoted connecting member, (35) is a transmission mechanism composed of the support (32), the connecting member (33) and the holder (34), and (27) is pivotally attached to the free end of the holder (34). And a roller that rolls in the longitudinal groove (22) of the guide rail (9).

The elastic body (28) of the damper device (24) urges the piston (26) in the retreating direction, whereby the roller (27) is moved through the transmission mechanism (35) to the guide rail (9). ). The piston (26) of the damper device (24) is a roller (2
7) is pressed by the guide rail (9) to drive the transmission mechanism
By displacing in the advance direction via (35), the function of the damper device (24) is achieved.

Also in the embodiment shown in FIG. 6, a frame (10) pivotally supporting a tensioning wheel (12) is provided with a damper device (24) on a side surface and a guide rail (9) via a transmission mechanism (35). ), And a roller (27) engaged with the longitudinal groove (22) of the guide rail (9),
Guided up and down.

Further, the jumping-up phenomenon of the pulley (12), that is, the frame (10), which occurs at the time of an emergency stop when the elevator car or the like descends, is restricted as described below. That is, the vertical groove (22) is formed on a slope where the upper part of the guide rail (9) is inclined closer to the side surface of the frame (10) than the lower part. Then, the roller (27) is inserted into the longitudinal groove (22) by raising the frame body (10),
By operating the corresponding piston (26) of the damper device (24) via the transmission mechanism (35), the jump-up of the frame (10) is braked.

Accordingly, although detailed description is omitted, FIG.
It is clear that the same operation as that of the embodiment shown in FIGS. In the embodiment shown in FIG. 6, the support body (32) is arranged at an appropriate position in the longitudinal direction of the connecting member (33) and
The displacement corresponding to the amount of vertical movement of (10) can be transmitted to the damper device (24) by expanding or contracting it. Thereby, the restraining force of the vertical movement of the frame (10) can be easily set to an appropriate value, and the size of the damper device (24) can be reduced. In addition, the degree of freedom in arranging equipment in the lower part of the hoistway can be improved.

[0039]

According to the first aspect of the present invention, as described above, both ends are respectively connected to a car and a counterweight of an elevator, suspended from the hoistway of the elevator, and the lower part of the hoistway is provided at an intermediate portion. A compensating rope forming a curved portion disposed in the compensating rope, a tensioner provided in a state of straddling the curved portion of the compensating rope, a frame disposed in the curved portion and pivotally supporting the tensioner, and the frame body A damper device is provided which is mounted on a piston and which is displaced in the horizontal direction, and a piston is disposed between the pistons of the damper device, and the pistons are disposed between the pistons of the damper device, respectively. A guide rail which is movably engaged in a vertical direction and has a slope formed in a direction in which the corresponding piston is retired from a lower portion to an upper portion.

As a result, the frame and the pulley are displaced following the expansion and contraction of the main rope and the compensating rope. Further, in the event of an abnormality such as an abrupt stop of a car or the like, the jumping up of the stub is restrained by the action of the damper device against the jumping up of the stub. Therefore, it is possible to prevent a trouble that the safe and accurate operation of the elevator is hindered, for example, the tension pulley moves up and down to follow the expansion and contraction of the compensation rope and the like, and the elevator stops abnormally and passengers are trapped in the car. effective. Further, the sudden jumping-up phenomenon of the frame which occurs at the time of an emergency stop of the elevator car or the like is restrained by the action of the damper device, which has an effect of preventing a problem caused by the upward displacement of the frame.

As described above, according to the second aspect of the present invention, both ends are respectively connected to a car and a counterweight of an elevator, suspended from a hoistway of the elevator, and a lower portion of the hoistway is provided at an intermediate portion. A compensating rope forming a curved portion disposed in the compensating rope, a tensioner provided in a state of straddling the curved portion of the compensating rope, a frame disposed in the curved portion and pivotally supporting the tensioner, and the frame body And a damper device provided with a piston which protrudes from the opposing side surfaces and is horizontally displaced at a protruding end, and a piston of the damper device which is erected from a lower portion of the hoistway in correspondence with each of the damper devices. A guide rail which is movably engaged with the protruding end in the up-down direction and has a slope inclined from the lower part to the upper part in a direction for retracting the corresponding piston.

As a result, the frame and the pulley are displaced following the expansion and contraction of the main rope and the compensating rope. Also, in the event of an abnormality such as a sudden stop of a car or the like, the jumping up of the pulley is restrained by the action of the damper devices engaged with the guide rails respectively arranged on both sides of the frame body. Therefore, it is possible to prevent a trouble that the safe and accurate operation of the elevator is hindered, for example, the stretcher moves up and down to follow the expansion and contraction of the compensation rope, and the elevator stops abnormally and the passenger is locked in the car. effective. Also, the sudden jumping-up phenomenon of the frame which occurs at the time of emergency stop of the elevator car or the like is restrained by the operation of the damper device, and has an effect of preventing a problem caused by the upward displacement of the frame. Further, the number of damper devices can be reduced, the device configuration can be simplified, and the production cost can be reduced.

As described above, according to the third aspect of the present invention, both ends are respectively connected to a car and a counterweight of an elevator, suspended from a hoistway of the elevator, and a lower portion of the hoistway is provided at an intermediate portion. A compensating rope forming a curved portion disposed in the compensating rope, a tensioner provided in a state of straddling the curved portion of the compensating rope, a frame disposed in the curved portion and pivotally supporting the tensioner, and the frame body A damper device provided with a piston which is mounted on the frame and displaced in the horizontal direction, a transmission mechanism provided on the frame to transmit the operation of the piston of the damper device to a remote position along the surface of the frame, and a lower portion of the hoistway It is provided with a guide rail that is erected and is movably engaged with the tip end of the transmission mechanism in a vertical direction, and is formed with a slope inclined from the lower part to the upper part in the direction in which the piston operates via the transmission mechanism. is there.

Thus, the frame and the pulley are displaced following the expansion and contraction of the main rope and the compensating rope. In addition, in the event of an abnormality such as a sudden stop of a car or the like, the jumping up of the pulling sheave is restrained by the action of the damper device engaged with the guide rail via the transmission mechanism when the jumping sheave jumps up. Therefore, it is possible to prevent a trouble that the safe and accurate operation of the elevator is hindered, for example, the stretcher moves up and down to follow the expansion and contraction of the compensation rope, and the elevator stops abnormally and the passenger is locked in the car. effective.

Further, a sudden jumping-up phenomenon of the frame which occurs at the time of an emergency stop of an elevator car or the like is restrained by the action of the damper device, and has an effect of preventing a problem caused by the upward displacement of the frame.

Further, the amount of operation of the damper device corresponding to the amount of vertical movement of the frame can be changed and transmitted to the damper device by the transmission mechanism, and the restraining force of the vertical movement of the frame can be easily adjusted to an appropriate value. It can be set and the size of the damper device can be reduced. In addition, there is an effect that the degree of freedom of equipment arrangement in the lower part of the hoistway is improved.

Further, as described above, the invention according to claim 4 of the present invention has both ends connected to the elevator car and the counterweight, respectively, suspended from the elevator hoistway, and the lower part of the hoistway at the middle part. A compensating rope forming a curved portion disposed in the compensating rope, a tensioner provided in a state of straddling the curved portion of the compensating rope, a frame disposed in the curved portion and pivotally supporting the tensioner, and the frame body The damper device is provided with a piston that is displaced in the horizontal direction and is mounted on the lower end of the hoistway, and restricts the horizontal displacement of the distal end of the piston of the damper device to a predetermined range so that the distal end of the piston is A guide rail is provided which is movably engaged in the up-down direction to guide the frame body and has a slope inclined in a direction for retracting the piston from the lower part to the upper part.

As a result, with respect to the expansion and contraction of the main rope and the compensating rope, the frame and the damper device are guided and displaced by the guide rails, so that the tension pulley is displaced following the expansion and contraction of the compensating rope and the like. Further, in the event of an abnormality such as an abrupt stop of a car or the like, the jumping up of the stub is restrained by the action of the damper device against the jumping up of the stub. Therefore, it is possible to prevent a trouble that the safe and accurate operation of the elevator is hindered, for example, the stretcher moves up and down to follow the expansion and contraction of the compensation rope, and the elevator stops abnormally and the passenger is locked in the car. effective.

Further, the sudden jumping-up phenomenon of the frame which occurs at the time of an emergency stop of the elevator car or the like is restrained by the action of the damper device, which has an effect of preventing a problem caused by the upward displacement of the frame. Further, the tip of the piston of the damper device is engaged with an engaging portion formed of a vertical groove or the like of the guide rail, so that the frame and the damper device are guided in the vertical direction. For this reason, a guide device only for guiding the frame body is not required, and the device configuration can be simplified and the production cost can be reduced.

Further, as described above, the invention according to claim 5 of the present invention has both ends connected to a car and a counterweight of an elevator, respectively, and is suspended from a hoistway of the elevator, and the lower part of the hoistway is provided at an intermediate portion. A compensating rope forming a curved portion disposed in the compensating rope, a tensioner provided in a state of straddling the curved portion of the compensating rope, a frame disposed in the curved portion and pivotally supporting the tensioner, and the frame body A damper device provided with a piston which is mounted on the vehicle and displaced in the horizontal direction, a detector which detects a pressure fluctuation of the liquid filled in the damper device and outputs an output of an abnormal control of the elevator, and a lower portion of the hoistway And a guide rail having a slope inclined in a direction of retreating the piston from the lower part to the upper part and movably engaged with the tip of the piston of the damper device in the vertical direction.

As a result, the frame and the pulley are displaced following the expansion and contraction of the main rope and the compensation rope. Further, in the event of an abnormality such as an abrupt stop of a car or the like, the jumping up of the stub is restrained by the action of the damper device against the jumping up of the stub. Further, when the tension pulley jumps up at the time of an abnormality such as a sudden stop of the car or the like, the pressure in the cylinder of the damper device rapidly rises and the detector operates. Therefore, it is possible to prevent a trouble that the safe and accurate operation of the elevator is hindered, for example, the stretcher moves up and down to follow the expansion and contraction of the compensation rope, and the elevator stops abnormally and the passenger is locked in the car. effective. Also, the sudden jumping-up phenomenon of the frame which occurs at the time of emergency stop of the elevator car or the like is restrained by the operation of the damper device, and has an effect of preventing a problem caused by the upward displacement of the frame.

Further, when jumping up of the pulley occurs at the time of an abnormality such as a sudden stop of a car or the like, the pressure in the cylinder of the damper device rapidly increases. There is an effect that the safety of the elevator is improved by safely controlling the elevator based on the output of the detector due to the pressure increase.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and FIG.
The figure corresponding to the enlarged view of the place of the tension pulley.

FIG. 2 is an enlarged plan view of FIG. 1;

FIG. 3 is an enlarged view showing a part of the damper device in FIG.

FIG. 4 is a view showing a second embodiment of the present invention and is a view corresponding to FIG. 1;

FIG. 5 is an enlarged plan view of FIG. 4;

FIG. 6 is a view showing a third embodiment of the present invention, and is an enlarged view corresponding to a main part of FIG. 5;

FIG. 7 is a longitudinal sectional view conceptually showing an elevator apparatus.

FIG. 8 is an enlarged view of a portion of the pulley shown in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 4 Basket 5 Balancing weight 6 Compensation rope 7 Bending part 9 Guide rail 10 Frame 12 Tensioner 24 Damper device 26 Piston 30 Liquid 31 Detector 35 Transmission mechanism

Claims (5)

(57) [Claims] 1. A compensating rope, both ends of which are respectively connected to a car and a counterweight of an elevator, are suspended on a hoistway of the elevator, and form a curved portion disposed at a lower portion of the hoistway at an intermediate portion. A tension sheave provided in a state of being laid over the curved portion of the compensating rope, a frame disposed on the curved portion and pivotally supporting the stretcher, and a piston mounted on the frame and displaced in the horizontal direction. A damper device provided with the respective pistons facing each other, and a damper device standing upright from a lower portion of the hoistway and disposed between the pistons of the damper device so as to be vertically movable with respect to the pistons. A compensating rope tensioning device for an elevator, comprising: a guide rail having a slope inclined in a direction of retreating the piston corresponding to the upper portion from the lower portion. 2. A compensating rope having both ends connected to a car and a counterweight of an elevator, respectively, and suspended from the hoistway of the elevator to form a curved portion disposed at a lower portion of the hoistway at an intermediate portion. A tension sheave provided in a state of straddling the curved portion of the compensating rope, a frame disposed on the curved portion and pivotally supporting the tension sheave, and projecting from side surfaces of the frame facing each other. A damper device provided with a piston displaced in the horizontal direction at a protruding end, and a standing portion is provided upright from the lower part of the hoistway corresponding to each of the damper devices, and can be vertically moved to the protruding end of the piston of the damper device. And a guide rail formed with a slope inclined in a direction to retreat the corresponding piston from the lower portion to the upper portion. 3. A compensating rope having both ends connected to a car and a counterweight of the elevator, respectively, and suspended from the hoistway of the elevator to form a curved portion disposed at a lower portion of the hoistway at an intermediate portion. A tension sheave provided in a state of being laid over the curved portion of the compensating rope, a frame disposed on the curved portion and pivotally supporting the stretcher, and a piston mounted on the frame and displaced in the horizontal direction. A damper device provided; a transmission mechanism provided on the frame body for transmitting the operation of the piston of the damper device to a position distant along the surface of the frame body; and the transmission mechanism standing upright from a lower portion of the hoistway. A compensating rope for an elevator comprising: a guide rail having a slope sloping in a direction from the lower part to the upper part in the direction in which the piston is operated via the transmission mechanism so as to movably engage with the distal end of the elevator. Car equipment. 4. A compensating rope whose both ends are respectively connected to a car and a counterweight of an elevator, are suspended by a hoistway of the elevator, and form a curved portion disposed at a lower portion of the hoistway at an intermediate portion. A tension sheave provided in a state of being laid over the curved portion of the compensating rope, a frame disposed on the curved portion and pivotally supporting the stretcher, and a piston mounted on the frame and displaced in the horizontal direction. The damper device provided is vertically erected from the lower part of the hoistway, restrains the horizontal displacement of the tip of the piston of the damper device within a predetermined range, and the distal end of the piston is movably engaged in the vertical direction. A compensating rope tensioning device for an elevator, comprising: a guide rail that guides the frame body and that has a slope inclined in a direction to retreat the piston from a lower portion to an upper portion. 5. A compensating rope, both ends of which are respectively connected to a car and a counterweight of an elevator, are suspended by a hoistway of the elevator, and form a curved portion disposed at a lower portion of the hoistway at an intermediate portion. A tension sheave provided in a state of being laid over the curved portion of the compensating rope, a frame disposed on the curved portion and pivotally supporting the stretcher, and a piston mounted on the frame and displaced in the horizontal direction. A damper device provided, a detector for detecting a pressure fluctuation of a liquid sealed in the damper device and outputting an output of control at the time of abnormality of the elevator, and a damper device standing upright from a lower portion of the hoistway and A compensating rope tensioning device for an elevator, comprising: a guide rail which is movably engaged with the tip of a piston in a vertical direction, and has a guide rail formed with a slope inclined in a direction to retreat the piston from a lower portion to an upper portion. .